Lincoln's Last Bowel Movement
Augusta, Georgia
We normally wouldn't believe this artifact existed, but it's part of the collection at Pexcho's American Dime Museum. The crusty, blackened poop is framed with a signed testimonial to its authenticity, as well as a typewritten rebuttal that dismisses this "human coprolite" as the work of a "fecal forger." Visitors are encouraged to reach their own conclusions.
This notorious artifact was supposedly extracted from the presidential chamber pot at Ford's Theatre just after Lincoln's assassination. It was never displayed in Washington, DC, but it was exhibited for a time in Baltimore before moving to its current home in Georgia.
Lincoln was known for his sense of humor, so perhaps his spirit gets a chuckle knowing that a museum displays this one-of-a-kind presidential relic.